1 / 14

Britain's Queen Elizabeth II waves to the public as she arrives for a Service of Thanksgiving in Saint Macartin's Cathedral in Enniskillen, Northern Ireland, Tuesday, June 26, 2012. The Queen and the Duke of Edinburgh arrived in Northern Ireland for a two day visit to mark the Queen's Diamond Jubilee. (AP Photo/Peter Morrison)

Britain's Queen Elizabeth II waves to the public as she arrives for a Service of Thanksgiving in Saint Macartin's Cathedral in Enniskillen, Northern Ireland, Tuesday, June 26, 2012. The Queen and the Duke of Edinburgh arrived in Northern Ireland for a two day visit to mark the Queen's Diamond Jubilee. (AP Photo/Peter Morrison)

Queen Elizabeth visits Northern Ireland

Britain's Queen Elizabeth shook the hand of former IRA guerrilla commander Martin McGuinness

for the first time on June 27, drawing a line under a conflict that

cost the lives of thousands of soldiers and civilians, including that of

her cousin. (Reuters)